CN202833978U - Twin-countershaft transmission main shaft assembly - Google Patents
Twin-countershaft transmission main shaft assembly Download PDFInfo
- Publication number
- CN202833978U CN202833978U CN 201220427003 CN201220427003U CN202833978U CN 202833978 U CN202833978 U CN 202833978U CN 201220427003 CN201220427003 CN 201220427003 CN 201220427003 U CN201220427003 U CN 201220427003U CN 202833978 U CN202833978 U CN 202833978U
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- main shaft
- gear
- catch
- mainshaft gear
- mainshaft
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Abstract
The utility model provides a twin-countershaft transmission main shaft assembly. main shaft gear blocking pieces, main shaft gear separation pieces, spline blocking pieces, pressed flat steel wire checking rings for holes, main shaft gears and hex keys are utilized to be matched with a main shaft to achieve axial positioning. The main shaft assembly adopts a single flat hex key, and a main gear and auxiliary gears are mutually meshed with each other to achieve radial positioning. The twin-countershaft transmission main shaft assembly is simple in structure, large in bearing capacity, and short in radial length. For a twin-countershaft transmission, gears at various gears of the main shaft float on the main shaft in the redial direction, and the axes of the main shaft and the auxiliary shafts are in the same plane. Radial force generated from meshing of the gears can be offset to each other, namely the main shaft only transmits torsion, and bears zero resultant force of the radial force. Compared with a previous force bearing method with two hex keys, the positioning method improves bearing capacity from 1900 Nm to the existing 2300 Nm, however, the quality and cost of the main shaft assembly are hardly changed.
Description
Technical field
The utility model is a kind of twin countershaft transmission main shaft assembly.
Background technique
Two intermediate shaft structure speed changers have the advantages such as compact structure, gear shifting force is little, the life-span is long, are widely used in road vehicle.Present employed main shaft assembly is the axially locating that realizes main shaft assembly by two hex keys, and bearing capacity only has 1900Nm, and part is more, and assembling is complicated.
Summary of the invention
The utility model is for the deficiencies in the prior art, a kind of technological scheme of twin countershaft transmission main shaft assembly is provided, the technical program is installed simply, reject rate is low, long service life, adopt the twin countershaft transmission of this position structure, it is by only using a hex key, by increasing the cross sectional area of hex key, the area of contact of itself and main shaft is strengthened, increase its antitorque characteristic, it is simple etc. to make the bearing capacity of speed changer reach 2300Nm, reliable operation, assembling, is specially adapted to road vehicle.
The utility model is realized by following technical measures: a kind of twin countershaft transmission main shaft assembly, comprise main shaft, be installed in the some gears on the main shaft, be provided with a unique long keyway that adapts with the main shaft size on the described main shaft, described long keyway is between two teeth of described main shaft, flat hex key and elastic cylinder bearing pin are installed in the described long keyway, described flat hex key is by the elastic cylindrical pin axially locating, described gear is installed on the main shaft by the flat hex key of wall scroll, the area of contact of described flat hex key and described main shaft increases, described gear one side is equipped with the mainshaft gear partition that is connected with flat hex key, described mainshaft gear partition one side is equipped with the hole that is connected with flat hex key flattening Steel Cable Baffle Ring successively, the spline catch, the mainshaft gear catch, described mainshaft gear catch, the mainshaft gear partition, spline catch and hole are carried out axially locating with flattening Steel Cable Baffle Ring to gear.
Concrete characteristics of the present utility model also have, above-mentioned mainshaft gear catch, be processed with the keyway consistent with long keyway shape on the main shaft between two teeth of mainshaft gear partition, place the spline catch between mainshaft gear catch and the mainshaft gear partition, the spline catch is realized axially locating by mainshaft gear catch and mainshaft gear partition, install porose with flattening Steel Cable Baffle Ring and realizing mainshaft gear and the hole axially locating of flattening Steel Cable Baffle Ring between spline catch and mainshaft gear, described flat hex key is placed in the keyway between two teeth of mainshaft gear catch and mainshaft gear partition, guarantee that mainshaft gear catch and mainshaft gear partition do not have circular movement in the main shaft keyway, mainshaft gear catch and mainshaft gear partition are fixed in long keyway and the keyway.
Concrete characteristics of the present utility model also have, and main shaft four gear gears, main shaft three gear gears, main shaft second gear, main shaft first gear, main shaft reverse gear are installed on the above-mentioned main shaft successively; On the described main shaft between main shaft four gear gears left side, main shaft three gear gears and the main shaft second gear, between main shaft first gear and the main shaft reverse gear main shaft sliding sleeve is installed; Mainshaft gear catch, spline catch, hole are installed successively with flattening Steel Cable Baffle Ring, mainshaft gear partition, hole with flattening Steel Cable Baffle Ring, spline catch and mainshaft gear catch on the main shaft between described main shaft four gear gears and the main shaft three gear gears; Mainshaft gear catch, spline catch, hole are installed successively with flattening Steel Cable Baffle Ring, mainshaft gear partition, hole with flattening Steel Cable Baffle Ring, spline catch and mainshaft gear catch on the described main shaft and on the main shaft between main shaft second gear and the main shaft first gear; On the described main shaft and be positioned at main shaft reverse gear right side and be provided with mainshaft gear catch, spline catch, hole with flattening Steel Cable Baffle Ring and mainshaft gear partition.
Concrete characteristics of the present utility model also have, above-mentioned flat hex key be with cross section be the up and down width of two parallel surfaces of orthohexagonal hex key add other plane width greatly 1.5-2.5 doubly.
Keyway on long keyway on the above-mentioned main shaft and described mainshaft gear catch, the mainshaft gear partition is the dovetail groove of the degree of 120 between two teeth that are arranged on its correspondence and can cooperates with described flat hex key.
The beneficial effects of the utility model are: (1) main shaft assembly is revised as the flat hex key of present wall scroll by two original hex keys, the twice of the cross sectional area of the hex key the when cross sectional area of the flat hex key of wall scroll is original two hex keys or be a bit larger tham twice, increased the hex key cross sectional area, it is the area of contact of hex key and main shaft, improved the bearing capacity of main shaft assembly, adopt single flat hex key, reduced assembly process, the main shaft assembly oeverall quality does not change; Former two hex keys in use because assembly relation, may cause in running, only have one in action, cause bearing capacity to reduce, and are fragile, and use single hex key and improve the intensity of single hex key, can improve reliability.
(2) axially locating of twin countershaft transmission is to be realized with the flattening Steel Cable Baffle Ring by mainshaft gear catch, mainshaft gear partition, spline catch and hole, realize its radial location by mainshaft gear and counter shaft gear intermeshing, it is simple in structure, bearing capacity is strong, axial length is constant; For twin countershaft transmission, main shaft respectively keeps off gear radial floating on main shaft, and the axis of major and minor axle is in the same plane, and the radial force that gear engagement produces is cancelled out each other, i.e. a main shaft transmitting torque, and making a concerted effort of force in radial is zero.
Description of drawings
Fig. 1 is the structural representation that is used for two jack shaft transmitter main shaft assemblies in the utility model embodiment.
Fig. 2 is flat hex key structural representation in the utility model embodiment;
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the partial enlarged drawing that the part such as main shaft and mainshaft gear catch cooperatively interacts and installs in the utility model embodiment.
Fig. 5 is the left view that hex key and main shaft are connected in the utility model embodiment.
Among the figure, 1, elastic cylindrical pin; 2, mainshaft gear catch; 3, spline catch; 4, the hole is with flattening Steel Cable Baffle Ring; 5, mainshaft gear partition; 6, flat hex key; 7, main shaft; 8, main shaft sliding sleeve; 9, main shaft reverse gear; 10, main shaft first gear; 11, main shaft second gear; 12, main shaft three gear gears; 13, main shaft four gear gears.
Embodiment
For clearly demonstrating the technical characterstic of this programme, below by an embodiment, this programme is set forth.
Such as accompanying drawing, a kind of twin countershaft transmission main shaft assembly, comprise main shaft 7, be installed in the some gears on the main shaft 7, be provided with a unique long keyway that adapts with the main shaft size on the described main shaft 7, described long keyway is between two teeth of described main shaft 7, the flat hex key 6 of wall scroll and elastic cylinder bearing pin 1 are installed in the described long keyway, described flat hex key 6 is by elastic cylindrical pin 6 axially locating, described gear is installed on the main shaft 7 by the flat hex key of wall scroll, described flat hex key 6 increases with the area of contact of described main shaft 7, described gear one side is equipped with the mainshaft gear partition 5 that is connected with flat hex key, described mainshaft gear partition 5 one sides are equipped with the hole that is connected with flat hex key flattening Steel Cable Baffle Ring 4 successively, spline catch 3, mainshaft gear catch 2, next-door neighbour's gear shares a mainshaft gear partition 5, described mainshaft gear catch 2, mainshaft gear partition 5, axially locating is carried out with flattening 4 pairs of gears of Steel Cable Baffle Ring in spline catch 3 and hole.Mainshaft gear catch 2, be processed with the keyway consistent with long keyway shape on the main shaft between two teeth of mainshaft gear partition 5, place spline catch 3 between mainshaft gear catch 2 and the mainshaft gear partition 5, spline catch 3 is realized axially locating by mainshaft gear catch 2 and mainshaft gear partition 5, install porose with flattening Steel Cable Baffle Ring 4 and realizing mainshaft gear and the hole axially locating of flattening Steel Cable Baffle Ring 4 between spline catch 3 and mainshaft gear, described flat hex key 6 is placed in the keyway between two teeth of mainshaft gear catch 2 and mainshaft gear partition 5, guarantee that mainshaft gear catch 2 and mainshaft gear partition 5 do not have circular movement in the main shaft keyway, mainshaft gear catch 2 and mainshaft gear partition 5 are fixed in long keyway and the keyway.
As shown in the figure, main shaft four gear gears 13, main shaft three gear gears 12, main shaft second gear 11, main shaft first gear 10, main shaft reverse gear 9 are installed successively on the main shaft 7; On the described main shaft 7 between main shaft four gear gears 13 left sides, main shaft three gear gears 12 and the main shaft second gear 11, between main shaft first gear 10 and the main shaft reverse gear 9 main shaft sliding sleeve 8 is installed; Mainshaft gear catch 2, spline catch 3, hole are installed successively with flattening Steel Cable Baffle Ring 4, mainshaft gear partition 5, hole with flattening Steel Cable Baffle Ring 4, spline catch 3 and mainshaft gear catch 2 on the main shaft 7 between described main shaft four gear gears 13 and the main shaft three gear gears 12; Mainshaft gear catch 2, spline catch 3, hole are installed successively with flattening Steel Cable Baffle Ring 4, mainshaft gear partition 5, hole with flattening Steel Cable Baffle Ring 4, spline catch 3 and mainshaft gear catch 2 on the described main shaft and on the main shaft between main shaft second gear and the main shaft first gear; On the described main shaft 7 and be positioned at main shaft reverse gear 9 right sides and be provided with mainshaft gear catch 2, spline catch 3, hole with flattening Steel Cable Baffle Ring 4 and mainshaft gear partition 5.
Wherein, flat hex key 12 be with cross section be the up and down width of two parallel surfaces of orthohexagonal hex key add other plane width greatly 1.5-2.5 doubly; The width of six faces of common hex key equates that namely its cross section is regular hexagon, and the cross section of the flat hex key in the utility model is flat Hexagon, and the Hexagon up and down length on two limits strengthens, for the 1.5-2.5 of other edge lengths doubly.
Wherein, the keyway on the long keyway on the main shaft and described mainshaft gear catch, the mainshaft gear partition is the dovetail groove of the degree of 120 between two teeth that are arranged on its correspondence and can cooperates with described flat hex key.
During installation, first mainshaft gear, mainshaft gear catch 2, spline catch 3, mainshaft gear partition 5, hole are installed on the main shaft 7 with flattening Steel Cable Baffle Ring 4 and mainshaft gear etc.; Then with mainshaft gear catch 2 and mainshaft gear partition 5 on circumference with the staggered tooth of main shaft, realized axially and the circumferentially location between each part; All comprise a keyway on mainshaft gear catch 2 and the mainshaft gear partition 5 simultaneously, above-mentioned keyway is 120 degree dovetail grooves, and this keyway is consistent with the long keyway that main shaft carries flat hex key, like this hex key is installed in the long keyway of main shaft, pass through simultaneously the keyway of mainshaft gear catch 2 and mainshaft gear partition 5, spline catch 3 again with the engagement of the internal tooth of mainshaft gear, so just realized the circumferential location of mainshaft gear catch 2 and mainshaft gear partition 5 and realized the axially locating of mainshaft gear.
The utility model can pass through or adopt existing techniques in realizing without the technical characteristics of describing; do not repeat them here; certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example; the variation that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement also should belong to protection domain of the present utility model.
Claims (5)
1. twin countershaft transmission main shaft assembly, comprise main shaft, be installed in the some gears on the main shaft, it is characterized in that, be provided with a unique long keyway that adapts with the main shaft size on the described main shaft, described long keyway is between two teeth of described main shaft, flat hex key and elastic cylinder bearing pin are installed in the described long keyway, described flat hex key is by the elastic cylindrical pin axially locating, described gear is installed on the main shaft by the flat hex key of wall scroll, the area of contact of described flat hex key and described main shaft increases, described gear one side is equipped with the mainshaft gear partition that is connected with flat hex key, described mainshaft gear partition one side is equipped with the hole that is connected with flat hex key flattening Steel Cable Baffle Ring successively, the spline catch, the mainshaft gear catch, described mainshaft gear catch, the mainshaft gear partition, spline catch and hole are carried out axially locating with flattening Steel Cable Baffle Ring to gear.
2. twin countershaft transmission main shaft assembly according to claim 1, it is characterized in that, described mainshaft gear catch, be processed with the keyway consistent with long keyway shape on the main shaft between two teeth of mainshaft gear partition, place the spline catch between mainshaft gear catch and the mainshaft gear partition, the spline catch is realized axially locating by mainshaft gear catch and mainshaft gear partition, install porose with flattening Steel Cable Baffle Ring and realizing mainshaft gear and the hole axially locating of flattening Steel Cable Baffle Ring between spline catch and mainshaft gear, described flat hex key is placed in the keyway between two teeth of mainshaft gear catch and mainshaft gear partition, guarantee that mainshaft gear catch and mainshaft gear partition do not have circular movement in the main shaft keyway, mainshaft gear catch and mainshaft gear partition are fixed in long keyway and the keyway.
3. twin countershaft transmission main shaft assembly according to claim 1 and 2 is characterized in that, main shaft four gear gears, main shaft three gear gears, main shaft second gear, main shaft first gear, main shaft reverse gear are installed on the described main shaft successively; On the described main shaft between main shaft four gear gears left side, main shaft three gear gears and the main shaft second gear, between main shaft first gear and the main shaft reverse gear main shaft sliding sleeve is installed; Mainshaft gear catch, spline catch, hole are installed successively with flattening Steel Cable Baffle Ring, mainshaft gear partition, hole with flattening Steel Cable Baffle Ring, spline catch and mainshaft gear catch on the main shaft between described main shaft four gear gears and the main shaft three gear gears; Mainshaft gear catch, spline catch, hole are installed successively with flattening Steel Cable Baffle Ring, mainshaft gear partition, hole with flattening Steel Cable Baffle Ring, spline catch and mainshaft gear catch on the described main shaft and on the main shaft between main shaft second gear and the main shaft first gear; On the described main shaft and be positioned at main shaft reverse gear right side and be provided with mainshaft gear catch, spline catch, hole with flattening Steel Cable Baffle Ring and mainshaft gear partition.
4. twin countershaft transmission main shaft assembly according to claim 1 and 2 is characterized in that, described flat hex key be with cross section be the up and down width of two parallel surfaces of orthohexagonal hex key add other plane width greatly 1.5-2.5 doubly.
5. twin countershaft transmission main shaft assembly according to claim 2, it is characterized in that the keyway on the long keyway on the described main shaft and described mainshaft gear catch, the mainshaft gear partition is the dovetail groove of the degree of 120 between two teeth that are arranged on its correspondence and can cooperates with described flat hex key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220427003 CN202833978U (en) | 2012-08-27 | 2012-08-27 | Twin-countershaft transmission main shaft assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220427003 CN202833978U (en) | 2012-08-27 | 2012-08-27 | Twin-countershaft transmission main shaft assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202833978U true CN202833978U (en) | 2013-03-27 |
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ID=47945687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220427003 Expired - Fee Related CN202833978U (en) | 2012-08-27 | 2012-08-27 | Twin-countershaft transmission main shaft assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202833978U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808931A (en) * | 2012-08-27 | 2012-12-05 | 中国重汽集团济南动力有限公司 | Main shaft assembly for double-intermediate-shaft speed changer |
| CN103990834A (en) * | 2014-03-26 | 2014-08-20 | 上海中科深江电动车辆有限公司 | Tool structure of dual-intermediate-shaft-bevel-gear transmission and corresponding machining method |
-
2012
- 2012-08-27 CN CN 201220427003 patent/CN202833978U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808931A (en) * | 2012-08-27 | 2012-12-05 | 中国重汽集团济南动力有限公司 | Main shaft assembly for double-intermediate-shaft speed changer |
| CN102808931B (en) * | 2012-08-27 | 2016-04-06 | 中国重汽集团济南动力有限公司 | Twin countershaft transmission main shaft assembly |
| CN103990834A (en) * | 2014-03-26 | 2014-08-20 | 上海中科深江电动车辆有限公司 | Tool structure of dual-intermediate-shaft-bevel-gear transmission and corresponding machining method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20210827 |